I'm sorry that I did not see this sooner or maybe I did and the procedure scared the bejeezus out of me so I did not finish reading it? At any rate, I have a friend who had this done about 20 years ago and the result was similarly successful. The immediate afterwards recovery is a bear or at least it looks like it was. I remember visiting him in the hospital.
I'm so happy to read about your son's results and he's a great looking guy. He will probably smile more now? That alone could change someone's mood for the better, it's a proven fact in orthodontics and cosmetic dentistry. Onward and upward for the both of you!